Hose-coupling.



W TNE'ESES O. H. CHAPMAN. HOSE 0011mm. APPLICATION FILED JULY18, 1908.

913,259. Patented Feb. 23, 1909.

FI LE.

Fig-4- IN VENTU R c, fiwlw E W 2;? m

Ar -an NEYS ITED STATES PATENT OFFICE.

CHARLES H. CHAPMAN, OF WINCHESTER, MASSACHUSETTS, ASSIGNOR TO LIGHTNING HOSE- COUPLING COMPANY, A CORPORATION OF MASSACHUSETTS.

HOSE-COUPLING.

- of TVVinOhester, in the county of Middlesex and'claim;

and State of Massachusetts, have invented certain new and useful Improvements in Hose-Couplings, of which the following is a specification.

This invention has for its object to provide a hose coupling, the members of which have a screw-thread connection, and are ada ted to be connected and disconnected wit out the delay incidental to a complete connection and disconnection by the rotation of one of the members.

- The invention is embodied in a coupling comprising a male member and afemale memher, the screw threads of which are interrupted to form on-the male member two screw-thread segments of different length, and in the female 'member threerecesses separating two series vof internal thread segments, the length of the recesses of the female member corresponding with the length of the projecting thread segments of the male member, and the arrangement bein such that the recesses of the female mem er will receive the projections of themale member when the parts are in only one relative osition, provision being thus made for quic ly engaging the two members and preventing their disengagement by any forward rotary movement of one of the members relativelyto the other, short of a complete rotation; so that whenthe two -me1n-' ers are connected and their threads are interengaged, a partial rotation of one member relativelyto the other will not permit the separation of the members by a rectilinear movement of one member relatively to the other.

The invention consists in the improvements which I will now Of the accompanying drawings, forming a part of this. s ecification,-Figure 1 represents an ende evation of the female member of a coupling embodying my invention.

Fig. 2 represents a section on a line between the numerals 2-2 of Fig; 1. Fig. 3 represents an end elevation of theinale member-0f said coupling. Fig. 4 represents a section on a line between the numerals 44 of Fig. 3. Fig. ,5 represents a side view of the male member.

The same reference'characters indicate the same parts in all the figures.

Specification of Letters Patent.

Application mea July 18, 1908. Serial No. 444,216.

proceed to describe 'eithei' Patented Feb. 23, 1909.

a represents the female member, and b the male member of a hose coupling embodying my invention, said members being adapted to be connected in the usual or any suitable way with. the

In the drawin s,

lengths of hose to be connected by the coupling. The female member is provided with an internal screw thread 12, which is interrupted to form two recesses 13 and 14 at oposite sides of the couplin the recess 13 being considerably shorter t an the recess 14, as shown in Fig. 1. The recess 14 does not extend entirely across the internal screw thread 12, a series of segments 14 of the internal thread being left unmoles-ted at the inner end of the recess, as shown in Figs. 1 and 2, said segments extending'from the recess 13 around the entire circle back to the recess 13.

The male member is provided with an external screw thread which is interrupted or cut away around the greater portion of the perimeter of the male member to form two series of male thread segments 15 and 16. The segments 1-5. are shorter than thesegments 16, and the two segments are formed to enter respectively the recesses 13 and 14 when the two members are brought together with the male segments 15 coinciding with the recesses 13, and the male segments 16 coinciding with the recesses 14. It will be observed by reference to Fig. 4 that the number of segments in the series 16 is less than that in the series 15.

The described construction enables the two members to be brou ht into on a e-.

ment with each other by a rectilinear movement of one of the members inthe direction required to cause the male segments to enter the recesses, after which a partial. rotation of one of the members relatively to the othen will cause an interengagement of'the screw threads.

The variation in length between the 'recesses 13 and 14, and between the male thread segments 15 and 16, andthe continuation of the female thread segment 14 I across the inner end of the recess 14 prevent the possibility of the separation of the two members by a rectilinear movement of one member has been given a partial rotation from the position it occupiedwhen first sectiori relatively, to the other after' segments 16 are of sufiicient length tosgan ut male member being shorter than the recessv loggment can 3 occur, and this is amply the female member.

' and 1 6 were of equal en h, a'ha f rotation would disconnect the threads ofthe. said 'members, and permit the separation of the --curvatures to the sides of t e ma ethread- -of the recess 14, and making the number of male segments in the series 16 less than compressible packing or washer 19 a ainst which the inner'end of the male mem er is seated when thetwo members are opera- 25 ence in ength between the recesses 13 and revolution of one member relatively to'the other should be. required, the male. thread the recess.1-3 of the female member, were it not for the continuous elongated segments 14 extending across the inner end of the recess 14, the segments 15 on the 14in the femalemember the said segments 15 would at once flybut of engagement. By leaving the elongated inner female-segments l4 extending-across the inner end that in the series 15, as shown in Fig. 4, a completerotation of one member relatively to t e other can be effected beforeany discient .to compensate for any variation 1n ractlcal use. I

r he female member. is provided with a of the male member in t e female member male member from the female member. This isrevented by-the describeddifler- 14 and between the thread segments 15 and 16, and by the-elongated female thread segments 14- extendin' across thev inner end ofthe recess 14 in t e female member; ,To facilitate the engagement ofthe thread,

segments of the two members, I reduoe or round off the leading ends of themale-threa'd segments 15 and 16, as shown at 21 in Figs. 3 and 5, this reduction im arti inward segments, and giving the leading ends of V said segments an approximate wed e shape which "enables them to readily d and enter. thespaces betweenthe female thread se ments.

' claim:'

1. A hose coupling comprising a male member having a male screw thread, WlllCll' is interrupted to. form a longer and ashorter series of male threadsegments, and a female member having a female screw thread which is interrupted to form longer and shorter recesses separating three series of female thread segments, and adapted to receive the said male thread se ments only when the members are broug t together with the shorter and longer male thread segments coinciding respectively'with the shorter and longer recesses, the female screw thread hav-' ing elongated inner convolution segments extending across theinner end of the longer recess, substantially as "and for the purpose specified.

2. A ,hose coupling comprising a male 1 member having a male screw threadfwhich is interrupted to form a longer and a shorter series of male thread. segments, the number of segments in one series being greater than that in the other series, and a female memjgber having a female screw thread Whichis' interrupted to form longerand shorter .re-

cesses separating three series of female thread. segments, and adapted to receive the said male thread segments only when. the members are brought together with the shorter and longer male thread segments coinciding respectively with the shorter and longer recesses, the female screw thread havin elongated inner convolution-segments exten ing across the inner endthe longer recess, substantially-as and for -the purpose specified. 1

. In testimony whereof I have afiiried signature, in presence of two witnesses.

CHARLES H. CHAPMAN. Witnesses:

O. F. BROWN,

P. N; 'PnzzETTL 

